Softened papyrus leaves were used as tampons in 155 BC. In Egypt, it has been recorded that soft cloth is put into women's vagina to prevent pregnancy. Experts infer that these soft cloths are also used to cope with menstruation, which is the first generation of "sanitary napkins" we know.
The development of modern sanitary napkins:
In p>1921, the world's first disposable sanitary napkin came from Kimberly-Clark (brand "KOTEX" in kotex)
In 1927, Johnson & Johnson Company also launched a sanitary napkin brand-MODESS
In the 197s, sanitary napkins were manufactured.
From p>1989 to 199, the history of sanitary napkins was changed from "Free Butterfly Wing" to "Silk-thin Sanitary napkins".
Sanitary napkins are absorbent materials, and the main materials are high-molecular polymers and high-molecular polymer composite paper formed by cotton, nonwoven fabric, pulp or the above materials. The design of the side edges is mainly used to prevent side leakage, because when in use, they will present a certain angle with the sanitary napkin body, and it is easier to rub with groin, so sanitary napkins with soft materials are more popular with women.
sanitary napkins are divided into three layers, namely, surface layer, absorbent core and bottom layer. The adhesive on the back of the sanitary napkin is a waterproof material, which can keep menstrual blood in the sanitary napkin.
Extended information:
Precautions for purchasing sanitary napkins
1. Observe the outer packaging: When purchasing sanitary napkins, don't be confused by the gorgeous colors of the outer packaging, but recognize the brand, manufacturer, address, production batch number, production date, etc. on the outer packaging. In addition, for the sanitary safety of sanitary napkins, we are most worried about whether there is a sanitary license.
2. Open the sanitary napkin, and check whether the sanitary napkin is white, clean and well sealed.
3. Ensure the quality of sanitary napkins is firm and durable. Tear them with a little force. The sanitary napkins are elastic but will not be torn. They have good adhesion and are not easy to fall off. The materials are soft and comfortable, with good water absorption and strong air permeability. They do not irritate the skin and have no allergic, itchy and other reactions after use.
Baidu encyclopedia-sanitary napkins